Client-side script execution via unsanitized chat rendering
Published Jul 8, 2024 · Updated Aug 1, 2024
Cross-site scripting in Khoj before 1.13.0 allows attackers to execute script in a user's client through adversarial content. The Desktop, Obsidian, and Web chat renderers convert user or model-generated Markdown to HTML and insert it into the DOM without sanitizing script-capable elements. Triggering requires a user to index a malicious document, submit crafted chat input, or invoke /online on adversarial web content; resulting script can expose desktop-app secrets or hang the client, while Obsidian execution remains sandboxed.
Summary
What happened
Cross-site scripting in Khoj before 1.13.0 allows attackers to execute script in a user's client through adversarial content. The Desktop, Obsidian, and Web chat renderers convert user or model-generated Markdown to HTML and insert it into the DOM without sanitizing script-capable elements. Triggering requires a user to index a malicious document, submit crafted chat input, or invoke /online on adversarial web content; resulting script can expose desktop-app secrets or hang the client, while Obsidian execution remains sandboxed.
The record
- CVE
- CVE-2024-25639
- Published
- Jul 8, 2024
- Updated
- Aug 1, 2024
- Vendor
- Khoj AI
- Product
- Khoj
- Classifications
- CWE-80, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 8, 2024CVE publishedPublication date reported by the CVE source.
- Aug 1, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <1.13.0
- Affected versionversion=< 1.13.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Khoj advisory cross-site scripting proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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